DCI vs WCC Comparison

Donaldson is a leading manufacturer of filtration systems and replacement parts (including air filtration systems, liquid filtration systems, and dust, fume, and mist collectors). The company serves a diverse range of end markets, including construction, mining, agriculture, truck, and industrial. Its business is organized into three segments: mobile solutions, industrial solutions, and life sciences. Donaldson generated approximately $3.7 billion in revenue in its fiscal 2025.

Wesco can be traced back to the late 1800s but was officially founded in 1922, acting as the distribution arm of Westinghouse Electric. Throughout the 1900s, Wesco entered and subsequently exited the consumer electronics, transit, bottling, and nuclear plant distribution markets. It was sold to a private equity firm in 1994 and then went public in 1999, and numerous acquisitions have since been made to fill the gaps in Wesco's geographical and product coverage. Today, the firm primarily distributes electrical, networking, security, and utility equipment used in the construction and repair of structures such as offices, data centers, power transmission lines, and manufacturing plants. Wesco has operations around the globe but generates the majority of its revenue in the United States.